Vacuum pump



FIG. 1 is a view of a front side of the vacuum pump;

FIG. 2 is a view of a left side of the vacuum pump;

FIG. 3 is a view of a right side of the vacuum pump;

FIG. 4 is a view of a top side of the vacuum pump;

FIG. 5 is a view of a rear side of the vacuum pump;

FIG. 6 is a view of a bottom side of the vacuum pump;

FIG. 7 is a first perspective view of the vacuum pump;

FIG. 8 is a second perspective view of the vacuum pump;

FIG. 9 is a third perspective view of the vacuum pump; and,

FIG. 10 is a fourth perspective view of the vacuum pump. 

The ornamental design for the vacuum pump, as shown and described. 